Something like the Raidmax Blackstorm ATX-615WU, but with a good window to see inside. It doesn't need a PSU, but it does need tool-less drive bays. Price range is up to 80$
The Cougar is a mean looking case. Also, I had considered the Storm Enforcer, until I was persuaded to get the Gigabyte 660 ti (which in my opinion is extremely ugly), which made me reconsider and go with blue/black to match my ram and mobo.